How long do each of the 4 main phases last?

The four main phases of a project typically refer to initiation, planning, execution, and closure. The duration of each phase can vary greatly depending on the project's complexity and scope. Generally, the initiation phase may last a few days to weeks, planning can take several weeks to months, execution often lasts the longest (from months to years), and closure usually takes a few weeks. Each phase's length is influenced by factors such as project size, team efficiency, and stakeholder involvement.